<!DOCTYPE HTML>
<html>
<!--
-->
<head>
  <title>Test for computation of CSS '-moz-initial'</title>
  <script type="text/javascript" src="../mochitest-simplified/packed.js"></script>
  <script type="text/javascript" src="../mochitest-simplified/SimpleTest.js"></script>
  <script type="text/javascript" src="property_database.js"></script>
  <style type="text/css" id="stylesheet"></style>
  <style type="text/css">
  /* For 'width', 'height', etc., need a constant size container. */
  #display { width: 500px; height: 200px }
  </style>
  <link rel="stylesheet" type="text/css" href="../mochitest-simplified/test.css" />
  <script type="text/javascript">
  SimpleTest.waitForExplicitFinish();

  var load_count = 0;
  function load_done() {
    if (++load_count == 3)
      run_tests();
  }
  </script>
</head>
<body>
<p id="display"><span><span id="elementf"></span></span>
<iframe id="unstyledn" src="unstyled.xml" height="10" width="10" onload="load_done()"></iframe>
<iframe id="unstyledf" src="unstyled-frame.xml" height="10" width="10" onload="load_done()"></iframe>
</p>
<div id="content" style="display: none">

<div><span id="elementn"></span></div>

  
</div>
<pre id="test">
<script class="testbody" type="text/javascript">

/** Test for computation of CSS '-moz-initial' **/

var gElementN = document.getElementById("elementn");
var gElementF = document.getElementById("elementf");
var gStyleSheet = document.getElementById("stylesheet").sheet;
var gRule1 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];
var gRule2 = gStyleSheet.cssRules[gStyleSheet.insertRule("#elementn, #elementf {}", gStyleSheet.cssRules.length)];

var gInitialValuesN;
var gInitialValuesF;
var gInitialPrereqsRuleN;
var gInitialPrereqsRuleF;

function setup_initial_values(id, ivalprop, prereqprop) {
  var iframe = document.getElementById(id);
  window[ivalprop] = iframe.contentWindow.getComputedStyle(
                       iframe.contentDocument.documentElement.firstChild, "");
  var sheet = iframe.contentDocument.styleSheets[0];
  // For 'width', 'height', etc., need a constant size container.
  sheet.insertRule(":root { height: 200px; width: 500px }", sheet.cssRules.length);

  window[prereqprop] = sheet.cssRules[sheet.insertRule(":root > * {}", sheet.cssRules.length)];
}

function test_property(property)
{
  var info = gCSSProperties[property];
  if (info.backend_only)
    return;

  if ("prerequisites" in info) {
    var prereqs = info.prerequisites;
    for (var prereq in prereqs) {
      gRule1.style.setProperty(prereq, prereqs[prereq], "");
      gInitialPrereqsRuleN.style.setProperty(prereq, prereqs[prereq], "");
      gInitialPrereqsRuleF.style.setProperty(prereq, prereqs[prereq], "");
    }
  }
  if (info.inherited) {
    gElementN.parentNode.style.setProperty(property, info.other_values[0], "");
    gElementF.parentNode.style.setProperty(property, info.other_values[0], "");
  }

  var initial_computed_n = get_computed_value(gInitialValuesN, property);
  var initial_computed_f = get_computed_value(gInitialValuesF, property);
  gRule1.style.setProperty(property, info.other_values[0], "");
  var other_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
  var other_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
  isnot(other_computed_n, initial_computed_n,
        "should be testing with values that compute to different things " +
        "for '" + property + "'");
  isnot(other_computed_f, initial_computed_f,
        "should be testing with values that compute to different things " +
        "for '" + property + "'");
  // It's important (given the current design of nsRuleNode) that we're
  // modifying the most specific rule that matches the element, and that
  // we've already requested style while that rule was empty.  This
  // means we'll have a cached aStartStruct from the parent in the rule
  // tree (caching the "other" value), so we'll make sure we don't get
  // the initial value from the luck of default-initialization.
  // This means that it's important that we set the prereqs on
  // gRule1.style rather than on gElement.style.
  gRule2.style.setProperty(property, "-moz-initial", "");
  var initial_val_computed_n = get_computed_value(getComputedStyle(gElementN, ""), property);
  var initial_val_computed_f = get_computed_value(getComputedStyle(gElementF, ""), property);
  is(initial_val_computed_n, initial_computed_n,
     "-moz-initial should cause initial value for '" + property + "'");
  is(initial_val_computed_f, initial_computed_f,
     "-moz-initial should cause initial value for '" + property + "'");
  gRule1.style.removeProperty(property);
  gRule2.style.removeProperty(property);

  if ("prerequisites" in info) {
    var prereqs = info.prerequisites;
    for (var prereq in prereqs) {
      gRule1.style.removeProperty(prereq);
      gInitialPrereqsRuleN.style.removeProperty(prereq);
      gInitialPrereqsRuleF.style.removeProperty(prereq);
    }
  }
  if (info.inherited) {
    gElementN.parentNode.style.removeProperty(property);
    gElementF.parentNode.style.removeProperty(property);
  }

  // FIXME: Something (maybe with the -moz-binding values in
  // test_value_computation.html, but may as well do it here to match)
  // causes gElementF's frame to get lost.  Force it to get recreated
  // after each property.
  gElementF.parentNode.style.display = "none";
  get_computed_value(getComputedStyle(gElementF, ""), "width");
  gElementF.parentNode.style.display = "";
  get_computed_value(getComputedStyle(gElementF, ""), "width");
}

function run_tests() {
  setup_initial_values("unstyledn", "gInitialValuesN", "gInitialPrereqsRuleN");
  setup_initial_values("unstyledf", "gInitialValuesF", "gInitialPrereqsRuleF");
  for (var prop in gCSSProperties)
    test_property(prop);
  SimpleTest.finish();
}

load_done();

</script>
</pre>
</body>
</html>
